Year current US$ 2011 0 2012 2932520.031929018 2013 4043916.583061211 2014 7539402.840659025 2015 5027125.939726828 2016 1295321.2611610058 2017 5258295.094361528 2018 22844425.857067112 2019 21656540.036201485 2020 18782140.135765083 2021 16150429.69048955 2022 26653804.724570364